Sentence examples for be systematic variations in from inspiring English sources

Additionally, for several of the biological markers there may be systematic variations in levels during the sampling interval (7.15 11.30 am).

There was systematic variation in their levels of Shh.

Firstly, whether there are systematic variations between nursing homes in the level of care given to patients.

There are systematic variations across ethnic groups in experience with illness, expectations from treatment and acceptability of treatment (Juarez et al, 1999).

Based on a large panel data set of German firms we investigate whether financing constraints exist for tangible investment and whether there is systematic variation across firms engaged in activities reflecting different knowledge conditions.

The generality of the regional relationships across time and space was examined by analyzing the residuals for differences among ecosystems within regions and time (interannual variation), because if the regional relationships were indeed generic to all coastal ecosystems within regions and constant over time there would be no systematic variations in the residuals.

While it is the mean pressure and flow which are most important in these processes, there are also systematic variations in pressure and flow which can play an important part in homeostasis.

Because measured urinary concentrations are functions of both analyte excretion rate, which is related to chemical exposure levels, and UFR, which is not, systematic variations in UFR associated with health outcomes of interest can directly confound the assessment of associations between urinary analyte concentrations and that health outcome.

The idea is that, if the instrumental variable is indeed randomized, there should be no systematic variation in the covariates by genotype.

To investigate further whether there were systematic underlying variations in the panel, an exploratory factor analysis was conducted.

Principal component analysis (PCA) was performed to confirm that there was no systematic variation in the dataset driven by sample origin or assay plate and that there were no outlier samples.